All those windows have 'glass break sensor strips' like the one I posted
here on the parking lot side of the building. You can see that the strip starts and ends in a little black box at the top. On the
frame of the window (inside, can't be seen from the outside) is another black box with corresponding sensors with the one on the window that are hard wired electrically to a central hub inside the building. If the window is opened, or the glass is broken, the electrical current between the contacts is disrupted and an alarm sounds. You have to turn the system off in order to open the window. I don't know if there is a 'local window shutoff', all the ones I have seen during my renovation and window washing days don't have a local shutoff. Usually, these were windows that did not open and were hardwired directly through the frame with no sensor box. Others that could open, were also (increasingly) subject to vibrations like tapping, doors closing, dogs barking usually due to separation of the contact points via contraction (age). To open these windows, the sensor has to be turned off.
Did nobody notice windows opening and closing? Because to shoot at Trump, the window would have to be open, maybe not 90º but a fair amount. Look at the video of the roof and field from the second floor meeting room. The window was open a fair way. Because the windows in question all face the same direction, the first floor window would have to be open close to the degree of the second floor window. These are crank windows. They take some time to open and close.
Even worse! Look at the crank. I don't know what it's called but it's like a 'key' crank, not the usual handle crank! I've never seen that. Sooo annoying, I think. (
@0:09)
If one sniper was doing it, he'd have to open the window with that god-awful crank, line up his shot, fire three times, and close the window. Or, to save time, his rifle was already on a tripod pointing towards Trump. He would have to still open the window, fine tune his shot, shoot three times and close the window. How long would the window be open for? If it was open for 'that long' and the cops saw it (and saw it close?) would they ask any questions, or, since they would already know there was a sniper team inside, just reason that it was someone legitimate and ignore it as a threat since the obvious threat was on the roof?